<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>jsonp前后端测试示例</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.js"></script>
</head>
<body>
    <script>
        window.test = function (res) {
            console.log(res)
            alert(res)
        }
    </script>
    <script src="http://localhost:3000/jsonp?callback=test"></script>
</body>
</html>